Institution: | 1. Institute of Arthritis, Peking University People's Hospital, Beijing, People's Republic of China;2. Peking University Health Science Center, Beijing, People's Republic of China;3. Center of Experimental Orthopedics, Saarland University Medical Center, Homburg/Saar, Germany;4. Department of Orthopaedic Surgery, Saarland University Medical Center, Homburg/Saar, Germany |